This question may be very simple, but I get confused on things like it.

If I have a fraction like this:

$-\frac{x}{-2}$

How can I convert this negative fraction to a positive one? It does not matter if the numerator or denominator is negative of positive, I just need to get rid of the main one. However, I think that $-\frac{x}{-2}$ is equal to $\frac{-x}{-2}$, is this true?

Realize that negative signs represent multiplying the number by $-1$. Any fraction can be multiplied by $\frac aa$ without changing the value, since it equals one. So, multiply your fraction by $\frac {-1}{-1}$ to clear negative signs (or to move them between the top and bottom).